Silicon nitride ceramic rings are made by sintering silicon nitride material and then precision machining. Silicon nitride possesses characteristics such as ultra-high mechanical strength, thermal shock resistance, lightweight, and high wear resistance.
Furthermore, compared to zirconium oxide and alumina, silicon nitride exhibits superior dynamic mechanical properties and is increasingly used in high-end machinery, aerospace, new energy, and semiconductor equipment.
Advantages of silicon nitride ceramic rings
High Strength and Impact Resistance
Silicon nitride is one of the most advanced ceramics in terms of overall mechanical properties, possessing high flexural strength, high compressive strength, resistance to mechanical impact, and resistance to breakage.
Устойчивость к термическому удару
Silicon nitride has extremely strong resistance to sudden temperature changes and can adapt to conditions such as rapid cooling from high temperature, high-frequency thermal cycling, and thermal shock, while still remaining stable and not easily cracking.
Lightweight and suitable for high-speed operation
Silicon nitride has a lower density than steel and most ceramics, making it lighter and reducing centrifugal force, mechanical load, and high-speed rotation stability, thus reducing energy consumption.
Отличная износостойкость
Silicon nitride has an extremely low coefficient of friction and high hardness, making it a type of long-life wear-resistant component. It can provide precise guidance, is more wear-resistant, less prone to seizing, and has a longer maintenance cycle.
Performance characteristics of silicon nitride ceramic rings
| Имя | Нитрид кремния | |||
| Плотность | г/см3 | 3.18-3.40 | ||
| Прочность на сжатие | МПа | 3000 | ||
| Прочность на изгиб при 25°C | МПа | 760-830 | ||
| Модуль Вейбулла m | – | 12-20 | ||
| Вязкость разрушения Kя | МПа м1/2 | 6.2-8 | ||
| Модуль Юнга | ГПа | 300 | ||
| Твёрдость | ГПа | 15 | ||
| Коэффициент Пуассона | – | 0.26 | ||
| Физические свойства нитрида кремния | ||||
| Теплопроводность при 20°C | Вт/мК | 25-28 | ||
| Параметр теплового удара R1 | К | 550-690 | ||
| Параметр теплового удара R2 | Вт/м | 15-18 | ||
| КТР1 25°С ➞ 250°С | 10-6/К | 1.9 | ||
| КТР1 25°С ➞ 1000°С | 10-6/К | 3.1 | ||
| Максимальная температура (окислительная) 2 | °С | 1400 | ||
| Диэлектрическая проницаемость | °С | 1200 | ||
| Объемное сопротивление при 25°C | ом-см | 1014 | ||
Why choose GORGEOUS CERAMICS for customization?
GORGEOUS CERAMICS boasts 15 years of experience in ceramic manufacturing and has obtained ISO 9001:2015, IATF 16949:2016, and ISO 14001:2015 environmental management system certifications. This means that GORGEOUS can provide customers with higher quality silicon nitride ceramic rings.
Часто задаваемые вопросы
What are the advantages of silicon nitride ceramic rings compared to zirconium oxide?
Silicon nitride is lighter, has stronger thermal shock resistance, and is more suitable for high-speed rotation, high-temperature, and dynamic load environments.
Are silicon nitride ceramic rings suitable for high-speed equipment?
Yes, they are very suitable because silicon nitride has a low density and a low coefficient of friction, which can reduce heat generation and wear during high-speed operation.
Can silicon nitride ceramic rings be customized with complex structures?
Yes. GORGEOUS CERAMICS (GGS) supports custom-made dimensions, tolerances, slots, micropores, and complex irregular structures according to drawings.
